5-6.lst

一些简单的c51程序

C51 COMPILER V7.09   5_6                                                                   08/25/2005 11:09:19 PAGE 1   


C51 COMPILER V7.09, COMPILATION OF MODULE 5_6
OBJECT MODULE PLACED IN 5-6.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 5-6.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <REG52.H>                
   2          #include <stdio.h>               
   3          #include <ctype.h>
   4          
   5          void main (void) {
   6   1      
   7   1              double sum,atof( char s[ ]);
   8   1              char sum1[10],sum2[10];
   9   1      
  10   1              SCON = 0x50; 
  11   1      TMOD |= 0x20; 
  12   1      TH1 = 0xf3; 
  13   1      TR1 = 1;
  14   1      TI = 1; 
  15   1      
  16   1      
  17   1              scanf("%s",sum1);
  18   1              scanf("%s",sum2);
  19   1              sum=atof(sum1)+atof(sum2);
  20   1              printf("%s+%s=%f\n", sum1,sum2,sum);
  21   1          while (1) {};
  22   1      }
  23          
  24          double atof( char s[ ])
  25          {
  26   1              double val, power;
  27   1              int i, sign;
  28   1              for ( i = 0; isspace(s[i]); i++ ) /* 跳过空白*/;
  29   1                      sign = (s[i] == '-' ) ? -1 : 1;
  30   1              if ( s[i] == '+' || s[i] == '-' )
  31   1                      i++;
  32   1              for (val = 0.0; isdigit(s[i]); i++)
  33   1                      val = 10.0 * val +(s[i] -'0' );
  34   1              if (s[i]  == '.')
  35   1                      i++;
  36   1              for ( power = 1.0; isdigit(s[i]); i++) {
  37   2                      val = 10.0 * val +(s[i] -'0' );
  38   2                      power *= 10.0;
  39   2              }
  40   1              return sign * val / power;
  41   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    549    ----
   CONSTANT SIZE    =     13    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      35
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)